\begin{table}[htbp]\centering \caption{Cross-correlation table\label{corrtable}}
\begin{tabular}{l  c  c  c }\hline\hline
\multicolumn{1}{c}{Variables} &R\_rog\_0\_GDPGSRE\_Mpc\_ln&n\_hm0\_oil&hm\_oil\\ \hline
R\_rog\_0\_GDPGSRE\_Mpc\_ln&1.000\\
n\_hm0\_oil&0.963&1.000\\
hm\_oil&0.942&0.979&1.000\\
\hline \hline 
 \end{tabular}
\end{table}
